var map;

function plot_rss(vlat, vlng, vzoom)
{

    map = new GMap(document.getElementById("map"));
    map.addControl(new GLargeMapControl());
    map.addControl(new GMapTypeControl());
    map.centerAndZoom(new GPoint(vlng, vlat), vzoom );

	var marker = createMarker(vlat, vlng);
	map.addOverlay(marker);

}

function createMarker(vlat, vlng) {

 var point = new GPoint(parseFloat(vlng), parseFloat(vlat));
	
	icon = new GIcon();
	icon.image = "images/center.png";
	icon.iconSize = new GSize(8, 8);
	icon.iconAnchor = new GPoint(4, 4);

 var marker = new GMarker(point, icon);

 return marker;

}